Hi, about the PC cable I bought some time ago one of them just to try if works but after modify the exterior I can't connect with my computer... I hadn't got enough time to look around so I'll try again in a short period.
It's weird because I didn't see the TWP3 charging during my tests...
I think you shouldn't have any issue. I am holding the cable by hand as shown in the picture, and it works perfectly fine.